Control of Microgrid for Different Modes of Operation

Abstract

Renewable resources can be used for the energy scarcity facing now. For the optimum usage of renewable resources, system called microgrid. It can be operated in two modes. In the normal condition the microgrid is connected to the utility grid. Current control is given during this mode to give preset power. In this mode, when there is any fault or maintenance in the main grid the microgrid is islanded either to prevent spreading of fault to the microgrid or to prevent accidents. When the intentional islanding is done, the control is given to maintain the voltage. Thus constant control is given to the loads during this mode. Depending on the generation of microgrid side the intelligent load shedding is implemented. The critical loads are maintained without any power quality issues. Simulation is performed using MATLAB \ Simulink software. Simulation of controls during different modes, islanding detection algorithm and intelligent load shedding is given here.